Safety instructions
12
isoPV1685-1685PFR_D00007_02_M_XXEN/10.2016
2.3 Device-specific safety instructions
Danger due to excessive locating current or locating voltage!
If the locating current of the locating current injector is too high, sensitive loads
(e.g. in control circuits) may be damaged or switching operations may be acti-
vated unintentionally. Select a low locating current for these systems. In cases of
doubt, please contact our Service Department (see page 48).
Risk of electric shock!
When opening the device, you may come into contact with live parts. Switch off
the mains voltage before opening the device!
Make sure that the basic settings meet the requirements of the IT system. Persons
without the required expertise, in particular children, must not have access to or
contact with the ISOMETER®.
Danger of electric shock!
When opening the device there is the danger of touching live parts.
Switch off the mains voltage before opening the device!
In the event of an alarm message of the ISOMETER®, the insulation fault should
be eliminated as quickly as possible.
If the ISOMETER® is installed inside a control cabinet, the insulation fault mes-
sage must be audible and/or visible to attract attention.
When using ISOMETER®s in IT systems, make sure that only one active
ISOMETER® is connected in each interconnected system. If IT systems are inter-
connected via coupling switches, make sure that ISOMETER®s not currently used
are disconnected from the IT system and deactivated. IT systems coupled via di-
odes or capacitances may also influence the insulation monitoring process so
that a central control of the different ISOMETER®s is required.
Prevent measurement errors!
When a monitored IT system contains galvanically coupled DC circuits, an insu-
lation fault can only be detected correctly if the rectifier valves (e.g. rectifier di-
ode, thyristors, IGBTs, frequency inverters, …) carry a minimum current of
> 10 mA.
DANGER
DANGER
WARNING
CAUTION
